Search for high-mass dilepton resonances in pp collisions at √s = 8 TeV with the ATLAS detector

0435529 - FZÚ 2015 RIV US eng J - Journal Article
Aad, G. - Abbott, B. - Abdallah, J. - Böhm, Jan - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Myška, Miroslav - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … Total 2881 authors
Search for high-mass dilepton resonances in pp collisions at √s = 8 TeV with the ATLAS detector.
Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 90, č. 5 (2014), "052005-1"-"052005-18". ISSN 1550-7998
R&D Projects: GA MŠMT(CZ) LG13009
Institutional support: RVO:68378271
Keywords : black hole * quantum * scattering * ATLAS * Randall-Sundrum model * narrow resonance * CERN LHC Coll * technicolor
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 4.643, year: 2014

The ATLAS detector at the Large Hadron Collider is used to search for high-mass resonances decaying to dielectron or dimuon final states. Results are presented from an analysis of proton-proton (pp) collisions at a center-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb-1 in the dielectron channel and 20.5 fb-1 in the dimuon channel. A narrow resonance with Standard Model Z couplings to fermions is excluded at 95% confidence level for masses less than 2.79 TeV in the dielectron channel, 2.53 TeV in the dimuon channel, and 2.90 TeV in the two channels combined. Limits on other model interpretations are also presented, including a grand-unification model based on the E6 gauge group, Z* bosons, Minimal Z' Models, a spin-2 graviton excitation from Randall-Sundrum models, quantum black holes and a Minimal Walking Technicolor model with a composite Higgs boson.
Permanent Link: http://hdl.handle.net/11104/0239372